Umehluko phakathi kwe-N-channel MOSFET ne-P-channel MOSFET! Ikusize ukhethe kangcono abakhiqizi be-MOSFET!

Abaklami bezifunda kufanele bacabangele umbuzo lapho bekhetha ama-MOSFET: Ingabe kufanele bakhethe i-P-channel MOSFET noma i-N-channel MOSFET? Njengomkhiqizi, kufanele ufune ukuthi imikhiqizo yakho iqhudelane nabanye abathengisi ngamanani aphansi, futhi udinga ukwenza ukuqhathanisa okuphindaphindiwe. Ngakho kanjani ukukhetha? U-OLUKEY, umkhiqizi we-MOSFET onolwazi lweminyaka engu-20, angathanda ukwabelana nawe.

Umehluko 1: izici zokuqhuba

Izici ze-N-channel MOS ukuthi izovuleka uma i-Vgs inkulu kunevelu ethile. Ilungele ukusetshenziswa lapho umthombo usekelwe (i-low-end drive), inqobo nje uma i-voltage yesango ifinyelela ku-4V noma i-10V. Ngokuqondene nezici ze-P-channel MOS, izovuleka uma i-Vgs ingaphansi kwenani elithile, elifanele izimo lapho umthombo uxhumeke ku-VCC (high-end drive).

Umehluko 2:I-MOSFETukushintsha ukulahlekelwa

Kungakhathaliseki ukuthi i-N-channel MOS noma i-MOS yesiteshi, kukhona ukumelana nokukhanya ngemva kokuvulwa, ngakho-ke okwamanje kuzodla amandla kulokhu kumelana. Le ngxenye yamandla asetshenzisiwe ibizwa ngokuthi ukulahleka kwe-conduction. Ukukhetha i-MOSFET enokumelana okuncane kuzonciphisa ukulahleka kokuqhuba, futhi ukumelana nokumelana kwama-MOSFETs amanje anamandla aphansi kuvamise ukuthi kube amashumi ama-milliohm, futhi kukhona nama-miliohm ambalwa. Ngaphezu kwalokho, lapho i-MOS ivuliwe futhi ivaliwe, akumele iqedwe ngokushesha. Kunenqubo enciphayo, futhi umsinga ogelezayo nawo unenqubo ekhulayo.

Ngalesi sikhathi, ukulahlekelwa kwe-MOSFET kuwumkhiqizo wamandla kagesi kanye nowamanje, okubizwa ngokuthi i-switching loss. Ngokuvamile ukulahlekelwa kokushintsha kukhulu kakhulu kunokulahlekelwa kwe-conduction, futhi ukuphakama kwemvamisa yokushintsha, ukulahlekelwa okukhulu. Umkhiqizo we-voltage kanye wamanje ngesikhathi sokuqhuba mkhulu kakhulu, futhi ukulahlekelwa okubangelwa nakho kukhulu kakhulu, ngakho ukufinyeza isikhathi sokushintsha kunciphisa ukulahlekelwa ngesikhathi sokuqhuba ngakunye; ukunciphisa imvamisa yokushintsha kunganciphisa inani lokushintshwa ngesikhathi seyunithi.

Umehluko wesithathu: MOSFET ukusetshenziswa

Ukuhamba kwembobo ye-P-channel MOSFET kuphansi, ngakho-ke uma usayizi wejometri we-MOSFET kanye nenani eliphelele le-voltage yokusebenza lilingana, ukudluliswa kwe-P-channel MOSFET kuncane kunaleyo ye-N-channel MOSFET. Ngaphezu kwalokho, inani eliphelele le-threshold voltage ye-P-channel MOSFET liphezulu uma liqhathaniswa, lidinga i-voltage yokusebenza ephezulu. I-P-channel MOS inokujika okunengqondo okukhulu, inqubo ende yokushaja nokukhipha, kanye ne-transconductance yedivayisi encane, ngakho isivinini sayo sokusebenza siphansi. Ngemuva kokuvela kwe-N-channel MOSFET, iningi lazo lithathelwe indawo yi-N-channel MOSFET. Nokho, ngenxa yokuthi i-P-channel MOSFET inenqubo elula futhi ishibhile, amanye amasekhethi okulawula idijithali aphakathi nendawo namancane asasebenzisa ubuchwepheshe besekethe ye-PMOS.

Kulungile, lokho kuphela kokwabelana kwanamuhla okuvela ku-OLUKEY, umkhiqizi wokupakisha we-MOSFET. Ukuze uthole ulwazi olwengeziwe, ungasithola ku-OLUKEYiwebhusayithi esemthethweni. U-OLUKEY usegxile ku-MOSFET iminyaka engu-20 futhi ikomkhulu lakhe liseShenzhen, esifundazweni saseGuangdong, eChina. Ikakhulukazi ibambe iqhaza kuma-transistors aphezulu akhona njengamanje, ama-MOSFET anamandla amakhulu, amaphakheji amakhulu ama-MOSFET, ama-MOSFET ama-voltage amancane, amaphakheji amancane ama-MOSFET, ama-MOSFET amancane amanje, amashubhu omphumela we-MOS field, ama-MOSFET ahlanganisiwe, amandla e-MOS, amaphakheji e-MOSFET, ama-MOSFET okuqala, ama-MOSFET ahlanganisiwe, njll. Umkhiqizo we-ejenti oyinhloko yi-WINSOK.